PJM files Mattawoman gas project interconnect deal at FERC

PJM Interconnection on March 18 filed with the Federal Energy Regulatory Commission an executed interconnection service agreement with the Mattawoman Energy LLC affiliate of Panda Power Funds and transmission owner Potomac Electric Power.

The ISA facilitates the interconnection to the PJM  system of 894 MW (Maximum Facility Output) at the Mattawoman Energy gas-fired, combined-cycle project located on Brandywine Road in Prince George’s County, Maryland. The ISA indicates that Mattawoman Energy shall have Capacity Interconnection Rights at the Point(s) of Interconnection in the amount of 744 MW, and Incremental Auction Revenue Rights in quantities to be determined pursuant to the timeframes and procedures set forth in the PJM Tariff. This project is under PJM Queue No. X3-087.

Under this ISA, on or before May 1, 2018, Mattawoman Energy must demonstrate commercial operation of all generating units. The ISA describes the project as: “A natural gas fueled combined cycle generating facility arranged in a two (2) combustion turbine and one steam turbine (2X1) configuration.”

In the meantime, the Maryland Public Service Commission recently pushed back its final decision date, from July to September of this year, for this project so it can review a major project revamp.

“The purpose of this supplemental environmental review document (SERD) is to update the Maryland Public Service Commission (PSC) record with respect to modifications that have occurred to the proposed power plant site and linear facilities for the Mattawoman Energy Project,” said a Jan. 30 Mattawoman filing at the PSC. “First, Mattawoman Energy has made changes to the power plant equipment because the original equipment is no longer available. The changes in equipment include updated Siemens model combustion turbines (CTs) and an adjusted steam turbine (ST). The new model CTs are state-of-the-art power generation equipment, capable of producing energy with industry-leading efficiency. These changes result in an increase in electric generation from 889 to 990 megawatts (MW).”

Steven Tessem, Senior Vice President for Business Development of Panda Power Funds, the parent company of Mattawoman Energy, said in Jan. 30 supporting testimony that the company is working with PJM on the project uprate. “Mattawoman Energy has submitted a supplemental request for an additional 116 MW of capacity injection rights, to which PJM has assigned queue number Z2-060. A feasibility study has been completed for this request and a System Impact Study is in progress.”

The ISA filed with FERC on March 18 is for the original version of the project, with the addition proceeding on a separate track at PJM under that different queue number.

An undated feasibility study on the PJM website for queue number Z2-060 said: “The Interconnection Customer (IC), has proposed a 33 MW Energy MWE; 116 MW Capacity (MWC) upgrade to their prior queue project X3-087. The combined X3-087 and Z2-060 projects will become a 927 MWE (860 MWC) resource. X3-087/Z2-060 is a natural gas fueled combined cycle generating facility arranged in a 2X1 configuration to be located in Brandywine, Maryland. PJM studied Z2-060 as a 116 MW injection into the Potomac Electric Power Company (Pepco) system at the Burches Hill 230 kV substation and evaluated it for compliance with reliability criteria for summer peak conditions in 2018.” The website shows there is no ISA yet for this extra capacity.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.